Building ventilator



Jam. 12, 1954 Filed June 30, 1950 A. H. JONES BUILDING VENTILATOR 2Shasta-Sheet 2 INVENTOR. mam/vase l-n Joxvss,

Patented Jan. 12, 1954 UNITED STATES PATENT, OFFICE 7 BUILDINGVENTHJATOR Alexander H. Jones, Jackson, Miss. Application June 30, 1950,Serial No. 171,392

2 Claims. (01. 9843) This invention relates to building ventilating Iapparatus and more particularly to apparatus for neously open and closethe passageway at the ceiling and the roof, which includes a poweroperated blower for moving air from the space below the ceiling of thebuilding through openings in the building ceiling and roof and means forclosing the openings to preclude the return flow of air and entry ofprecipitation when operation of the power operated blower isdiscontinued, and which is simple and durable in construction,economical to manufacture, and easy to install.

Other objects and advantages will become apparent from a considerationof the following description and the appended claims in conjunction withthe accompanying drawings wherein:

Figure 1 is a transverse cross sectional view through a fragmentaryportion of a building showing the installation of ventilating apparatusillustrative of the invention in the building;

Figure 2 is a cross sectional view on the line 2--2 of Figure 1;

Figure 3 is a bottom plan view of a portion of the ventilating apparatuslooking from the line 33 of Figure 1; V

Figure 4 is a cross sectional view on an enlarged scale on the line 4-4of Figure 3; and

Figure 5 is a perspective view of a fragmentary portion of theventilating apparatus showing structural details thereof.

With continued reference to the drawings, the building fragmentarilyillustrated in Figure 1 has a roof IU of any usual or desiredconstruction, a ceiling II, walls [2 and partitions l3 dividing thespace below the ceiling into rooms, as indicated at [4 and I5.

The ceiling II is provided with a ventilating opening therethrough, theopening in the arrangement illustrated being located in the room I5 andadjacent the building wall i2 near the eaves of the roof 10. An openended housing or box [3 is supported by the ceiling and disposed in theventilating opening I! and this housing has an open upper end and alower end wall l3 provided with air passage openings IS. A poweroperated blower 20 is mounted in the housing [6 and controlled through aswitch 2| by a. drop cord 22 and a series of vanes or louvres 23 isdisposed in the upper open end of the housing. The vanes 23 aresubstantially parallel to each other and are pivotally mounted each atone edge in the housing I6 so that the vanes can be moved between aposition in which the corresponding end of the housing is substantiallyopen and an overlapping position in which they close this end of thehousing, and preclude the passage of air through the ceiling opening.

The roof opening 24 is provided with a marginal flange 26 projecting tothe outer side of the roof and a marginally flanged cover 21 receivesthe flange 26 to close the roof opening,

A lever 28 reinforced by a tension member 29 and bridge 30 is pivotallymounted intermediate its length on a pivot pin 3| the ends of which arerotatably received in sockets 32 provided on the ends of Vshapedbrackets 33 secured to the roof [0 and depending from the underside of the roof at the edge of the roof opening nearest the buildingwall I2. V shaped brackets 34 are secured to the cover and dependtherefrom and these brackets are provided at their ends remote from thecover with sockets 35 which receive a pivot pin 36 which pivotallyconnnects the corresponding end of the lever 28 to the brackets 34; Bypulling the other end of the lever 28 downwardly the cover 21 will beraised above the roof, to the dotted line position illustrated in Figure1, and when the pull on the other end of the lever is released the coverwill move into engagement with the roof flange 26 and close theopening.

Movement of the cover away from the roof is limited by suitable means,such as the chains 31 each of which is connected at one end to the underside of the cover and at its other end to the roof within the opening24.

An elongated bar or link 38 extends slidably through an opening 39 inthe ceiling and is pivotally connected at its upper end to the end ofthe lever 28 remote from the brackets 34. A flexible strand, such as thechain 40, is secured at one end to the lower end of the link 38 anddepends from the latter so that the link can be manually pulled downwardto'rock the lever 28 in a direction to lift the cover 2'1 from the roof.This chain is adjustably engageable with a suitable hook 4| to hold thecover in raised position.

A rocker 42 is pivotally mounted on the housing l6 adjacent the link 38and is connected through a bar 43 with the free edges of all of thevanes 23. A link 44 pivotally connects the bar 38 to the rocker 42 sothat when the bar is pulled downwardly by the chain 40 the rocker ismoved in a direction to move the vanes 23- to their open position. Thus,downward movement of the bar or link 38 simultaneously opens the ceilingopening and the roof opening of the building, and release of the chainsimultaneously closes both of these openings.

When the ceiling and roof openings are both open, the power operatedblower 20 may be put into operation to force air from the room 5 throughthe ceiling opening l'i into the attic space between the ceiling and theroof and through'the roof opening to discharge the air to the exteriorof the building. When operation of the blower 20 is discontinued, thechain 40 may be released to close both of the openings and therebyprevent return flow of air or prevent precipitation from entering theroof opening.

Other rooms, such as the room 14, may be connected into the ventilatingsystem by ducts, as indicated at 45, and registers, as indicated-at,opening into the ducts. The register 46 in the arrangement illustratedopens from the room M into the duct 45 which in turn communicates withthe interior of the housing l6.

The invention may be embodied in other specific forms Without departingfrom the spirit or essential characteristics thereof. The presentembodiment is, therefore, to be considered in all respects asillustrative and not restrictive, the scope of the invetnion beingindicated by the appended claims rather than by the foregoingdescription, and all changes which come within the meaning and range ofequivalency of the claims are, therefore, intended to be embracedtherein.

What is claimed is:

1. Ventilating apparatus for a building having a ceiling provided with aventilating opening therein and a roof provided with a ventilatingopening therein spaced from said ceiling opening comprising a housingmounted on said ceiling and disposed within said ceiling opening, dampermeans movably mounted in said housing to open and close said ceilingopening, a power operated blower in said housing for forcing air throughsaid ceiling opening, a cover for the opening in said roof, a bracketsecured to said roof adjacent the opening therein, a lever pivotallymounted intermediate its length on said bracket, means pivotallyconnecting one end of said lever tosaid cover, flexible means connectedbetween said cover and said roof maintaining the coversubstantiallyparallel to the roof and over the roof opening when the cover is raised,a bar pivotally connected-at one end to saidlever at the end'of saidlever remote from said cover; a rocker pivotally mounted on said ceilingadjacent the ceiling opening, means connecting said rocker to saiddamper, means pivotally connecting said bar to said rocker to enablesaid bar to move said lever and said rocker simultaneously, and aflexible strand connected at one end to said bar at the end of said barremote from said lever and depending from said bar below said ceiling toprovide means for manually moving said bar.

'2. In combination with a building having a ceiling provided with anopening, a roof spaced from said ceiling and provided with an opening, acover for said roof opening, a housing mounted on said ceiling anddisposed within the ceiling opening, a power operated blower in saidhousing, a damper secured in said housing at one side of .said blower,and manually operated means connected to said cover and said damper forsimultaneously moving said damper and said cover to open and close thecorresponding roof and ceiling openings comprising a bracket attached tosaid roof at the under side thereof adjacent said roof opening, aleverpivotally connected intermediate its length to said bracket, meanspivotally connecting said lever at one end thereof to said roof openingcover, an elongated bar connected at one end to said lever at the end ofsaid lever remote from said cover and depending from said lever, arocker mounted on said ceiling adjacent the opening in said ceiling andpivotally connected to said damper, means pivotally connecting said barto said rocker to enable said bar to move said lever and said rockersimultaneously, and a flexible strand connected at one end to said barat the end of said bar remote from said lever and depending from saidbar to provide means for manually moving said bar, said damper and saidcover simultaneously.

ALEXANDER I-I. JONES.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 985,148 Cummings Feb. 28, 1911 1,219,893 Woolf Mar. 20, 19171,277,404; Garred Sept. 3, 1918 2,159,498 Birkholz May 23, 19392,328,659 McKenna Sept. 7, 1943 2,517,303 Green Aug. 1, 1950 FOREIGNPATENTS Number Country Date 80,452 Germany Apr. 1, 1895

